分析:①49+256+351,意義加法交換律和結(jié)合律簡算;
②25×44運(yùn)用乘法結(jié)合律簡算;
③25×99×40,運(yùn)用乘法交換律和結(jié)合律簡算;
④50×19×2,運(yùn)用乘法交換律和結(jié)合律簡算;
⑤379-125-75,根據(jù)減法的性質(zhì)簡算;
⑥59×101,運(yùn)用乘法分配律簡算;
⑦9600÷25÷4,運(yùn)用除法的運(yùn)算性質(zhì)簡算;
⑧3536-(558+536),運(yùn)用減法的性質(zhì)簡算.
解答:解:①49+256+351
=(49+351)+256
=400+256
=656;
②25×44
=25×4×11
=100×11
=1100;
③25×99×40
=(25×40)×99
=1000×99
=99000;
④50×19×2
=(50×2)×19
=100×19
=1900;
⑤379-125-75
=379-(125+75)
=379-200
=179;
⑥59×101
=59×100+59
=5900+59
=5959;
⑦9600÷25÷4
=9600÷(25×4)
=9600÷100
=96;
⑧3536-(558+536)
=3536-536-558
=3000-558
=2442.
點(diǎn)評:完成本題要注意分析式中數(shù)據(jù),運(yùn)用合適的簡便方法計算.